Home / 20,393,141.85-28,142,894.52-11,100,978.99

Finding the Fourth Proportional to 20,393,141.85, 28,142,894.52 and 11,100,978.99

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Solution

The fourth proportional to 20,393,141.85, 28,142,894.52 and 11,100,978.99 is: 15,319,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393,141.85 : 28,142,894.52 = 11,100,978.99 : x
  2. Step 2: Convert to fraction form
    20,393,141.85/28,142,894.52 = 11,100,978.99/x
  3. Step 3: Cross multiply
    20,393,141.85x = 28,142,894.52 × 11,100,978.99
  4. Step 4: Simplify right side
    20,393,141.85x = 312,413,680,784,306.12
  5. Step 5: Solve for x
    x = 312,413,680,784,306.12/20,393,141.85
  6. Step 6: Final answer
    x = 15,319,546.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.